50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __CC_HELPER_H__
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#define __CC_HELPER_H__
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#include <stdint.h>
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#include <utils/threads.h>
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namespace android {
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class ICommonClock;
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// CCHelper is a simple wrapper class to help with centralizing access to the
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// Common Clock service as well as to implement a simple policy of making a
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// basic attempt to reconnect to the common clock service when things go wrong.
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class CCHelper {
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public:
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static status_t isCommonTimeValid(bool* valid, uint32_t* timelineID);
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static status_t commonTimeToLocalTime(int64_t commonTime, int64_t* localTime);
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static status_t localTimeToCommonTime(int64_t localTime, int64_t* commonTime);
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static status_t getCommonTime(int64_t* commonTime);
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static status_t getCommonFreq(uint64_t* freq);
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static status_t getLocalTime(int64_t* localTime);
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static status_t getLocalFreq(uint64_t* freq);
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private:
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static bool verifyClock_l();
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static Mutex lock_;
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static sp<ICommonClock> common_clock_;
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};
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} // namespace android
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#endif // __CC_HELPER_H__
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